The Disco blenny, (Meiacanthus smithi), is a species of combtooth blenny found in coral reefs in the western Pacific and Indian oceans. This species grows to a length of 8.5 centimetres (3.3 in) TL. It is also commonly known as smith's fangblenny, smith's sawtail blenny or smith's harp-tail blenny. This species is also found in the aquarium trade.